There should be more than that on the power brick, either output current …There should be more than that on the power brick, either output current (in Amps) or output power (in watts).Without this it is just a guess; have you tried Creative for a replacement??

Urr I have no idea about power and the terminology haha, speakers are probs 2 years old don't think they would help would they?

Just a quick search on Google, pulled up several different options from eBay, Amazon and other sellers for replacement power supplies for Creative T40 speakers (I think they're labelled Gigaworks from memory... But I might be wrong). Double check your voltage and amps, make sure you're buying one with a UK plug. Job done!